[oldman20]

There are no significant changes in pH or environment during the process. about <12 hours . and only about 15% have the above phenomenon in the same stirring device. Specifically, out of 8 outputs, only 1 output has a milky solution about 70% of the time, then returns to normal.

The system has previously been used to dispense another type of floor cleaner without any problems.

[oldman20]

check your pH at first time making and current?

[oldman20]

afaik, no need with Products are not diluted, and has free-anionic surfactants in formula, since our product not effect with water in house customers!?

[oldman20]

i will like CAPB, at least this time

[oldman20]

maybe too much NaCl? did you trying make high viscosity with salt?

[oldman20]

i found reason, clear yellow appears if i use acid phosphoric Korea, which has lightly purple color, while use others acid phosphoric which transparently, solution will stay transparent

Now only question: common ionic effect. any help? Thank

[oldman20]

i dont think reason is different concentration, maybe acids is different?

[oldman20]

afaik, concentration of CMIT/MIT in product (%) is 0.0015 is safe

Risk Assessment of 5-Chloro-2-Methylisothiazol-3(2H)-One/2-Methylisothiazol-3(2H)-One (CMIT/MIT) Used as a Preservative in Cosmetics - PMC (nih.gov)

and DMDMH maybe useful for fungicidal efficacy?

Construction and evaluation of a bioluminescent Pseudomonas aeruginosa reporter for use in preservative efficacy testing - PMC (nih.gov)

ncbi.nlm.nih.gov

Page not available - PMC

Page not available - PMC

[oldman20]

thank all of you for responding. Good day for all, cheer

and Merry Christmas!

[oldman20]

I tried putting the same batch of the cloudy sample in a 60 degree oven (meaning the same solution but this sample is still clear) for 1 hour but nothing happened, it was still clear.

And thank for advice 2, i understand it

[oldman20]

laureth ethoxylate 12 at 3%

But previous brews with the same ratio did not have this phenomenon, even the batch immediately following.

[oldman20]

Thanks for your comment

[oldman20]

hi, i’m back. and i’d like to update more information:

* microbiological test results show no signs of contamination

* my sample was left in the oven at about 55 degrees, and i really can’t explain it, it’s a bit contrary to what i and you thought: right after taking the sample out the solution looked more opaque, and a bit clearer when it cooled outside.

i’m really confused, the next batch still had the same brewing and filling system as usual

• This reply was modified 1 month, 2 weeks ago by  oldman20.

[oldman20]

thanks for your idea, i will try it. but i dont think it has much to do with kraft point, Because the ambient temperature where I am is summer, about 32-35 degrees Celsius.

no one has the same idea as me about the possibility of microbial contamination? but microbial contamination in 2-3 hours causing the cloudiness as in the picture is it too fast?

[oldman20]

i think so too

[oldman20]

I used <em style=”font-family: inherit; font-size: inherit; -webkit-text-size-adjust: 100%;”>TroyCare™ BD55 by Troy Corporation (Arxada), afaik it fine on my floor cleaner which pH approximate 7. I Tried sending samples for microbiological testing, but not 100% sure and this phenomenon has never happened before. I am really confused and need to hear ideas on the possibilities of what could be causing this phenomenon from everyone

[oldman20]

agree

[oldman20]

yeah, anionic surfactant with sodium chloride always start point! afaik

[oldman20]

Would i know about name of skincare manufacturing factory in Vietnam & Malaysia, if it doesn’t bother you?

[oldman20]

afaik, anionic combine with cationic surfactant isnt good idea!

[oldman20]

i trying make solution for remove calcium rust. Tested oxalic acid and compare with citric acid, seem citric work better (i used egg shield for test!)

So it not correct?

NaCl is possible to accelerate the reaction with metal when added to NaCl due to the phenomenon of “common ionic effect”: it provides Cl- ion to the solution, then Cl- combined with H+ in acid solution-> HCl

[oldman20]

sorry, what is mean of this

it’s used only in rinse off products.

So do you think 7.5ppm (0.00075%) is recommended for all personal care products (maybe for homecare products also)?

[oldman20]

thank for your information. in my location, at least many manufacturers i know usually put 0.1% CMIT/ MIT in formula. while i read from NCBI.NLM.NIH.GOV recommended 0.0015% (15ppm)

is it reason for allergy users when using that product?

[oldman20]

thank your answer! maybe i missing it

btw, so about product of NaOH + Las reaction, is it any role in washing? or just product of acid-basic reaction, for neutralization las acid, and nothing else?

[oldman20]

thank, but the question in this case returned from #1 post: how NaOH can neutralize fats if neutralized with acid? or NaOH will reaction both fats and acid same time?